Home / 143,341,993.88-197,828,745.09-81,471,632.66

Finding the Fourth Proportional to 143,341,993.88, 197,828,745.09 and 81,471,632.66

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Solution

The fourth proportional to 143,341,993.88, 197,828,745.09 and 81,471,632.66 is: 112,440,398.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,341,993.88 : 197,828,745.09 = 81,471,632.66 : x
  2. Step 2: Convert to fraction form
    143,341,993.88/197,828,745.09 = 81,471,632.66/x
  3. Step 3: Cross multiply
    143,341,993.88x = 197,828,745.09 × 81,471,632.66
  4. Step 4: Simplify right side
    143,341,993.88x = 16,117,430,849,561,258
  5. Step 5: Solve for x
    x = 16,117,430,849,561,258/143,341,993.88
  6. Step 6: Final answer
    x = 112,440,398.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.